Q1: The reading obtained being as shown below, calculate the elevations (R.L) of all points, and check your results. point B.S L.S F.S H.I Elevation Remarks 1 2 3 1.622 34.82 1.874 0.354 36.34 2.032 1.780 36.592 4 2.362 5 0.984 1.122 36.454 6 1.906 2.824 35.536 2.036 33.500 B.M

Q: Find the distance x in fig below, use the common intensity method as (i= 1200/1+90) x 150 m Sewer 1 Sewer 2 Sewer 3 50 m B Percent Slope Area A 0.44 0.5 B 0.35 2 Sewer D (mm) 1 290 2 410 3 600 0.8 Distance (m) 140 80 d/D 0.3 0.6 V full m/s 1.8 2 1.6

SITUATION 3. a) The base and altitude of a triangle lot were measured to have certain probable errors of 314.60 0.16 and 92.60 = 0.14, compute the probable error of the resulting computation. (3- b) The following sides of a rectangle and its probable errors are 120.40 0.04 and 360.50 ± 0.08 respectively. Compute the probable errors of the sum of the sides (perimeter) of rectangle. (3r c) The probable error of the mean of 6 observation is 0.043 and the most probable value of the measurement is 860 m compute the relative precision. C

Problem 1: Inputs: ● A = (3, 3) ft B = (9, 12) ft C=(3, 1) ft D = (9, 6) ft this Compute the centroid of the shaded region. For problem you must use the integral method. We will check our answers using another method in the next problem. a) Computex using integrals b) Compute y using integrals y A C y B D X